Valve for liquids.



No. 675,757. v v ,Patented'lune 4, I90I.

w. A. G. SCHNHEYDER.

VALVE FOR `VLIIUIDS.

(Application'led Oct. 25, 1900.)

(No Model.)

UNITED STATES PATENT OEEICE.

WILLIAM A. G. SCHNHEYDER, OF CLAPI-IAM PARK, ENGLAND.

VALVE FOR LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 675,757, dated June 4, 1901.

Application iiled October 25, 1900. Serial No. 34,375. (No model.)

To @ZZ whom t may concern.-

Be it known that I, WILLIAM ANTON GOTT- LIED SOHNHEYDER, a citizen of Denmark, residing at 4 Rosebery road, Clapham Park, in the county of Surrey, England, have invented a certain new and useful Improvement in Valves for Liquids, (for which I have applied for a patent in Great Britain, dated April 28, 1900, No. 7,9l4,) of which the following is a specification.

My invention relates to sluice-valves so constructed that when they are worked in closing or opening the passages which they govern their surfaces are moved relatively to those on which they bear, so that there is always a grinding and polishing action which produces uniform wear, making the parts a'ccurately fit and preventing leakage.

I shall describe my invent-ionapplied to a sluice-valve, referring to the accompanying drawings.

Figures l and 2 are vertical sections on planes at right angles to each other. Fig. 3 is a sectional plan on the lines 3 3 of Fig. 1.

The sluicehvalve is made in two parts a and h, engaging one another back to back, but free to move apart. These parts have teeth around the circumference and are inclosed within a loop c of the rod d, this loop having two sets of teeth, the one set adapted to engage with those of the valve when the rod d descends and the other set to engage with those of the valve when the rod ascends. Thus` when the valve is moved up or down :it is also caused to make a partial rotation, always in the same direction, whereby its faces and those against which it works are rendered always even and smooth, preventing leakage. The rod d is moved up and down by turning a handle-nut e, Working on a screw-threaded part of the rod. The rod itself is prevented from turning by the sides of its loop 'o working in recesses at the sides of the valve-casing. Stops f are provided to preventV the valve from being raised so far as to be off the facings against which it works.

Having vthus described the nature of this invention and the best means I know of car rying the same into practical effect, I claim;

The herein-described sluice-valve comprising the valve-casing and valve-seat, the valve,

ythe valve-rod and means for connecting said rod and valve, said means being constructed and arranged to cause the valve to make a partial rotation on its seating always in the same direction as the valve is raised and low; ered, substantially as described.

In testimony whereof I have hereunto-set my hand in presence of two subscribing Witnesses. W. A. G. SOHO-NHEYDER.

Witnesses:

GERALD L. SMITH, EDWARD GARDNER. 

